Systems and methods that effectively and efficiently provide a communications interface between remotely located GMLC and SMLC nodes. Two die assemblies are set in parallel, each including top and bottom dies matched with each other. The height of the tip corresponds to the distance between the tip and the shelf. This distance measurement is then used to adjust the sensitivity of the 3-D cursor control system such that the cursor moves on the display in accordance with the same movement of the remote control regardless of distance of the remote control unit from the ultrasonic sensors.